Electric resistance heating for inner space covering at least surrounding inner surface

摘要

A decentral voltage supply with 230 volt AC current is provided, for each of the individual electrically conducting heating layers has a current line (7) of 230 volt AC. Each heating layer (3) is allocated a power part (6) producing a protective small voltage. Which is connected sec. side on the user side with the connection lines (5) conducting the protective small voltage, and primary side on the supply side is connected with a central distributor (8) for 230 volt, across the current lines (7).